Chain-link.



J. M. DODGE fin-Mm LINK.

APPLiCATION FILED NOV- I4- 19H.

Patented J111y 31, 1917 2 SHEETS-SHEEfl J. M. DODGE.

CHAIN LINK, v AWLICAHOH FILED M0v.14. 1914,

Patented July 31, 1917.

2 SHEETS-SHEET 2- EIQ35AQ,

' Jmjflbag JAMES BQDGE, F EHILADELPHIA, EENNSYLVANIA, ASSIGNOR T0LIN'K-IBELT GOEE- EANY, CEICAGO, ILLINOIS, A CQEJPOBATION OF ILLINOISara-res.

original application filed March 11, 1914, Serial No. 823,913.

a, 1914. Se rialrl'o. 872,133.

To all whom z't may concern.

Be it kiiown that 1, James M. Donors, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in. Chain-Links, (be

me; division or" application filed March.

int -.angeable.

of) one filed by me on lbe 8th day of February 1913, Serial l'lo.747.101, and also to one filed by Karl Dodge on the 8th day of February,1913, Serial No. 747,135.

The objectof my present invention is to improve the construction of alink of the type above described and to make the quadrangular bodyportion from'a round bar, flail. ned and shaped so as to be readilyunited to she hook member by welding, i order to make a substantial linkwhich will be a substitute for the present malleable iron link and whichwill be interchangeable therewith.

This object l attained in the following manner, reference being bad tothe accompanying drawings, in which:

Figure 1, is a perspective view of my improved chain link;

l 2, is a longitudinal sectional view on the line o-a, Fig. 3;

3, 1s a plan view; Fig. 4, is a. transverse sectional view on the line1H2), Fig. :3;

Fig. 5, is a transverse sectional view on the line cc, Fig. 3;

Fig. 6, is a longitudinal sectional view on the line d d, Fig. 7,showing the body portion and the hook member assembled prior to welding;p Fig. '4', is a plan view of the link prior to assembling;

8 and 9, are plan and side views, re-

spectively, illustrating the first step in the process of forming thebody portion by flatcening a round bar; 7

Specification of Letters Patent.

Divided and this application filed. no ember Figs. 10 and 11, are viewsof the second step of the process, showing the cutting of the flattenedportion;

Figs. 12- and 13, illustrate the third step in the process, in which theedges of the tapered and flattened finished;

Fig. 14, is a view of oneof the blanks out from the bar;

Fig. 15, is a view showing'bhe blank bent at each end; r

Fig. 16, is a view showing the blank bent 'to'form the quadrangular bodyportion;

Fig. 17, is a view of the finished body portion ready to have the hookmembers applied thereto, as in Fig. 7

18, is an enlarged perspective view of one of the hook elements showingthe first made rectangular and I having an open center into which theteeth of the sprocket wheel can project. -This body portion is made froma round bar in the present instance, and is bent into shape to form theround end bar 3, tapered side bars l, and the flat-end members 5, Figs.6,

' 7 and 17. I The two end members 5, in the present instance, arepreferably arranged to contact one with the other within the hooksection 2, as illustrated in Fig. 7.

The book section is made of a series of blanks 6, assembled side byside, and these blanks have a socket 7 for the reception of an end bar 3of an adjoining link and are slotted at 8 directly back of the socket toreceive the end members 5 of the body portion. When the two parts areassembled, tlwy are secured together, preferably by W'elding, so as tomake an integral link. The

slot 8 in the hook member 2 is arranged, at.

an angle, as Clearly illustrated in Fig. 5, and the end member 5 of thebody portion is also arranged at the same angle and these end membersare of a greater depth than the balance of the body portion andpreferably extend above the upper surface of the hook .member, as inFig.,6, to allow sufiicient metal Patented July 331, 19332,

portions are rounded and drawings, 1 is the bodyto make the proper Wild,These members 5 are hat and the slot 8 is comparatively .narnow so as todecrease the distance between the front and rear of the hook member andyet to allow'sufiicient metal to make a firm union between the twoparts.

' It is es ential, at the present time, that the link should interchangewith an ordinary standard malleable link of the same size or number, andby making the link as above described it will interchange.

I make the blank for the body portion in the following manner :A rod ofa diameter to fit the socket member is flattened at intervals, as shownat 9, Fig 8 and 9, so

as to increase its Width and to reduce its depth. Then this flattenedportion is shaped by cutting away the depression on'each side of acentral projection 10, as illustrated in Figs. 10 and 11. This, however,leaves sharp corners at the edges 11 and 12. The blank is then placed indies, which round the edges 11 and 12, as illustrated ini ig. l2 and 13.The blank is then in condition to be cut in the proper length, asillustrated in Fig. 14, and 1 preferably make the blanks so that one endmember 5 will be of a greater length than the other member 5,'so as tobreak joints with the sections of the hookmember, as so illustrated in7. In this instance, there are four sections of the hook member, but,

Where the member is uneven, the ends ,5 can be, of the same length. Theends are then bent, as illustrated in Fl 5, at the oint w, a, Fig. 14,to form the end members, and are finally bent at y, 3 Fig. 15, so as toform the tapered side members, as illustrated in Fig. 16. The blank isfinally shaped in suitable dies so as to bring the ends of the endmember 5 substantially in contact, as in Fig. 17, and to reduce any finswhich might be formed on the body portion. At this step in the processthe notches 13 are formed so that the links can be coupled by slidingthe end bar into the socket of an adjoining link.

The blanks for the hook member 2 are punched from sheet metal andnotched at the upper edge back of the socket 7, as at 14, Fig". 18. Thenthe blanks are assembled and cut by a suitable tool to form a deep slot8, Fig. 19. The mouth of the slot is preferably enlarged by beveling theside walls, as shown at 15, Figs. 6 and 19, and as the end bar extendsabove the hook member it provides suliicient metal to properly make theslot. The Weld is usually made ,by an acetylene flame and the excessmetal of the hook member and the body portion is sullicient to make aproper weld, but it Will be understood that additional metal may beadded in some instances, Without departing from the eseential feature ofthe invention.

The finished Weld Will have the appear once, as illustrated at w, Figs.1 and 2, and an additional Weld may be made as at o, Figs. 1 and'i, tounite the sections of the hook member together at the point of the hook.

A link made in accordance with my invention has been tested and compared"with a malleable link of the same standard size, and it is strongerthan the malleable iron link and can be manufactured at a less cost.

In this application I lay no claim to the process of making, thedescribed chain link, as said process is covered in the application forpatent filed by me on lllarch 11th, 19%, under Serial No. 823,913, ofwhich this plication is a division.

I claim r l. The combination in a chain link, or" a substantiallyrectangular body p rtion comprising a round cross-bar at one end, fiatmembers at the opposite end, the llat mem bers being of less thicknessand of greater Width than the diameter of the round bar,

and continuous side bars connecting the fiat end members with the endcross bar, said side bars being circular in cross section adjacent theend. cross bar and merging into a rectangular cross section adjacent theflat end, members, and a hook member carried by the fiat end members;said hook member having a transversely recessed socket for the receptionof the round end bar of an adjoin ing link and an independent transverseslot back of the recessed socket receiving the on end members or" thebodyportion; said parts being secured together to form a unitarystructure.

2. An open rectangular ,chain link comprising a round cross-oar at oneend and a hook member at the opposite end adapted to receive the roundcross-bar of an adjoining link, and side bars connecting the hook mem-

